Jack semen has been preserved successfully since the 1950s (Nishikawa, 1959). A few studies have used fertility trials with frozen jack semen (Glatzel ''et al'', 1981). Techniques used for stallion semen are applicable to jack semen with some modifications (Glatzel ''et al'', 1981; Singhvi, 1990; Purdy, 2005b; Tibary ''et al'', 2006). | Jack semen has been preserved successfully since the 1950s (Nishikawa, 1959). A few studies have used fertility trials with frozen jack semen (Glatzel ''et al'', 1981). Techniques used for stallion semen are applicable to jack semen with some modifications (Glatzel ''et al'', 1981; Singhvi, 1990; Purdy, 2005b; Tibary ''et al'', 2006). |